Comparison Study of Polyethylene and Polypropylene Addition on Asphalt With Lignin as Coupling Agent

Putra, Wahyuaji Narottama; Syahwalia, R.; Hendrasetyawan, B. E.; Giovanni, Samuel C.; Chalid, Mochamad

doi:10.1002/masy.201600066

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…Because of it, we can use the characteristics as a coupling agent from different characteristics of other material. Previous research has shown the result that PP-modified bitumen with lignin have passed the penetration requirement for construction application [9]. In this work, we did research for further study of the compatibility level of lignin especially the composition of lignin to combine with PP plastic bag and bitumen from the chemistry bond and morphological characteristics.…”

Section: Introductionmentioning

confidence: 97%

Improvement of polypropylene (PP)-modified bitumen through lignin addition

Yuanita¹,

Hendrasetyawan

Firdaus

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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View the article online for updates and enhancements. Abstract. Polypropylene (PP) is usually added to bitumen to improve its mechanical properties, however, both of them have different chemical properties. To achieve best mechanical properties of the mixture, coupling agent such as lignin is importantly required. Lignin is an amorphous biopolymer, has bipolar characteristic due to its distinct chemical function which has carbonyl, carboxyl, hydroxyl and phenol chemical function. Otherwise, bitumen and PP have polar and nonpolar characteristic, respectively. In the previous research, it is found that lignin is potential to be used as coupling agent. In order to confirm the potential of lignin as a coupling agent, there are various compounds of lignin on PP-bitumen mixtures used in this research. This experiment consists of several stages, ranging from sample preparation, characterization of raw materials, mixing, and characterization of the PP-Modified Bitumen. This experiment used hot melt mixing to mix lignin, PP, and bitumen. The result of this experimental was analyzed by using FTIR and FESEM. The addition of lignin make Polymer Modified Bitumen (PMB) getting better mixing and increase mechanical properties. Furthermore, FESEM characterization indicated that the addition of lignin gave better mixing of PP-Bitumen. FTIR showed a new chemical structure due to the addition of lignin. From this experiment, the addition of lignin can improve mixing between PP and Bitumen. So, we can use lignin as coupling agent.

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Section: Introductionmentioning

confidence: 97%

Improvement of polypropylene (PP)-modified bitumen through lignin addition

Yuanita¹,

Hendrasetyawan

Firdaus

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Effect of Lignin Content as Bio‐Chain Extender in Polyurethane Foam

Kustiyah

Putra

Gerry

et al. 2020

Macromolecular Symposia

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Polyurethane is a polymer compound that consists of a hard segment and a soft segment. Further modifications of polyurethane make it possible to make foam products with a variety of properties. Polyurethane foam has a tendency to be rigid and flexible by adjusting the segment ratio and adding chain extenders during the synthesis process. The basic precursors used in this research on bio‐polyurethane foam are Polypropylene Glycol 2000, Toluene Diisocyanate 80, Amine catalyst, Tin catalyst, surfactant, and the addition of lignin biomass as a chain extender and as independent variables of this study with 1, 2, and 3 wt% variations with the synthesis method used is a one‐shot method. In attempt to investigate the effect of lignin chain extender addition to the macromolecular structures and morphology, FTIR and SEM are used, while the mechanical properties are analyzed using tensile machine. From the synthesis carried out, bio‐polyurethane foam with open pore shape is obtained. It has increased tensile strength, but the elongation tends to decrease with increasing lignin biomass addition.

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Preliminary Study of Modified Lignin Compatibility in Polypropylene‐Modified Bitumen

Roziafanto¹,

Alfarisi

Ramadhan

et al. 2020

Macromolecular Symposia

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Lignin is an amorphous biopolymer that has both polar and nonpolar characteristics which has been proven able to chemically bond bitumen and polypropylene. However, the presence of polar bond in lignin is more dominant than the nonpolar one making it less effective to bond polypropylene. Thus, lignin is modified to reduce its polar hydroxyl group by synthetizing it with prepolyurethane otherwise known as polyurethanization. This modified lignin compatibility to bond bitumen and polypropylene is then studied and compared with lignin, such is the true purpose of this research. Experiment is done through several stages ranging from sample preparation, mixing, and characterization. Hot melt mixing method is used to mix bitumen, polypropylene, and modified lignin with mass ratio of 19:1 for bitumen and polypropylene, which are mixed in 80 rpm. Mixing is done at the temperature of 180 °C for 30 min with 0.3% total weight addition of modified lignin. Characterizations are done using FT‐IR and FESEM. Result shows that modified lignin has better compatibility compared to pure lignin.

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Comparison Study of Polyethylene and Polypropylene Addition on Asphalt With Lignin as Coupling Agent

Cited by 5 publications

References 12 publications

Improvement of polypropylene (PP)-modified bitumen through lignin addition

Improvement of polypropylene (PP)-modified bitumen through lignin addition

Effect of Lignin Content as Bio‐Chain Extender in Polyurethane Foam

Preliminary Study of Modified Lignin Compatibility in Polypropylene‐Modified Bitumen

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